<template>
    <div>
        <div class="search">
            <input v-model="keyword" type="text" class="search-input" placeholder="输入城市名或拼音">
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li  
                    class="search-item border-bottom" 
                    v-for="item in list" :key="item.id" 
                    @click="handleCityClick(item.name)"
                >
                {{item.name}}</li>
                <li class="search-item border-bottom"  v-show="hasNodata">没有找到匹配数据</li>
            </ul>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll';
import {mapMutations} from 'vuex'
export default {
    name:'citySearch',
    data(){
        return{
            keyword:'',
            list:[],
            timer:null
        }
    },
    props:{
        cities:Object
    },
    computed:{
        hasNodata(){
           return  !this.list.length
        }
    },
    watch: {
        //监听keyword的变化
        keyword(){
             if(this.timer){
                clearTimeout(this.timer);
             }
             if(!this.keyword){
                 this.list=[];
                 return;
             }
            this.timer=setTimeout(()=>{
                const result=[];
                for(let i in this.cities){
                    this.cities[i].forEach((value)=>{
                        if(value.spell.indexOf(this.keyword)>-1 || 
                            value.name.indexOf(this.keyword)>-1){
                                result.push(value);
                        }
                    })
                }
                this.list=result;
            },100)
        }
       
    },
    mounted(){
        this.scroll=new Bscroll(this.$refs.search);
    },
    methods:{
         handleCityClick(city){
            // this.$store.commit('changeCity',city);
            // alert(city);
            this.changeCity(city);
            this.$router.push('/');
        },
        ...mapMutations(['changeCity'])
    }
}
</script>

<style lang="stylus" scoped>
@import '~@/assets/styles/varibies.styl';
.search
    height :.72rem
    background :$bgColor
    padding :0 .1rem
    .search-input
        box-sizing :border-box
        height :.6rem
        line-height :.6rem
        width :100%
        text-align :center
        border-radius:.06rem
        color :#666
.search-content
    overflow :hidden
    position:absolute
    top:1.58rem
    left:0
    right :0
    bottom :0
    background :#eee
    z-index :1
    .search-item
        line-height :.62rem
        padding-left :.2rem
        color :#666
        background :#fff
</style>
